JP2006304316A5

JP2006304316A5 -

Info

Publication number: JP2006304316A5
Application number: JP2006123721A
Authority: JP
Filing date: 2006-04-27
Publication date: 2008-09-04
Anticipated expiration: 2021-07-26

Claims

Display means for displaying a low gradation correction image and a gradation correction image other than low gradation;
A visual environment grasping means for generating environmental information indicating the visual environment by measuring each gradation correction image displayed in the display area ;
Based on the brightness value included in the environment information, if it is affected by ambient light, so as to increase the output of at least the low gradation region, the correction means for correcting the output characteristic data for display wherein the display means used seen including,
The correction means measures the brightness value L11 when the low gradation correction image is measured in an actual environment and the gradation correction image of gradations other than the low gradation in the actual environment. Based on the brightness correction environment information value α based on the brightness value L12 when colored, the input / output characteristic data is corrected by performing a predetermined calculation;
Image display device .

Oite to claim 1,
Wherein the correction means, the input-output characteristic lines at least a portion as the gamma correction of the correction data Utotomoni, a first constant value γmin1 in low gradation region, using said brightness correction for environmental information value α A gamma value γ1 ′ for a low gradation region is obtained by performing the predetermined calculation, a second constant value γmin2 different from the first constant value in a gradation region other than the low gradation region, and the brightness The gamma value γ2 ′ for the gradation region other than the low gradation region is obtained by performing the predetermined calculation using the correction environment information value α.
Image display device .

In claim 2,
When the adjustment parameter value is h, the correction means calculates Δγ1 = −hα (γ−γmin1) / (1+ | hα |) as the predetermined calculation for the low gradation region to correct γ. The gamma value γ1 ′ is obtained by obtaining the amount Δγ1, and Δγ2 = −hα (γ−γmin2) / (1+ | hα |) is calculated as the predetermined calculation for the gradation region other than the low gradation region. To obtain the gamma value γ2 ′ by obtaining the correction amount Δγ2 of γ.
Image display device.

In claim 3,
The output for the low gradation area is obtained by multiplying the input value raised to the power of γ1 ′ by the third constant value, and the output for the gradation area other than the low gradation area is raised to the power of γ2 ′. Color control processing means for determining a value by multiplying a fourth constant value different from the third constant value;
Image display device.

In any one of Claims 1-4,
The correction means includes the brightness value L11, the brightness value L12, a brightness value L01 when the low-tone correction image is measured in an assumed usage environment, and the assumed usage environment. The brightness correction environment information value α is calculated based on the brightness value L02 obtained when the tone correction image of the gradation other than the low gradation is measured.
Image display device.

In claim 5,
The brightness correction environment information value α = {(L02 / L01) / (L12 / L11)} − 1.
Image display device.

In any one of Claims 1-6 ,
The visual environment grasping means includes a luminance sensor that measures a luminance value of the display area or a color light sensor that measures an RGB value or an XYZ value of the display area .
Image display device .

In any of the claims 1-7,
Means for displaying an image prompting the user to input a type of screen having the display area;
Means for inputting the type of the input screen as at least part of the environmental information;
Including,
Image display device .

Display means for projecting a low gradation correction image and a gradation correction image of a gradation other than the low gradation toward a display area;
A visual environment grasping means for generating environmental information indicating a visual environment by measuring each gradation correction image displayed in the display area;
Correction means for correcting the input / output characteristic data for display used by the display means so as to increase the output of at least a low gradation region when there is an influence of ambient light based on the brightness value included in the environment information. Including
The correction means measures the brightness value L11 when the low gradation correction image is measured in an actual environment and the gradation correction image of gradations other than the low gradation in the actual environment. Based on the brightness correction environment information value α based on the brightness value L12 when colored, the input / output characteristic data is corrected by performing a predetermined calculation;
projector.

In a computer-readable program for controlling the display means and the visual environment grasping means,
The computer,
Display control means for causing the display means to display a gradation correction image of low gradation and a gradation correction image of gradation other than low gradation;
Visual environment grasping control means for causing the visual environment grasping means to measure the color of each gradation correction image displayed in the display area and generating environment information indicating the visual environment;
Based on the brightness value included in the before Symbol environment information, if it is affected by ambient light, so as to increase the output of at least the low tone range, correction means for correcting the output characteristic data for display wherein the display means used A program that functions as
The correction means measures the brightness value L11 when the low gradation correction image is measured in an actual environment and the gradation correction image of gradations other than the low gradation in the actual environment. Based on the brightness correction environment information value α based on the brightness value L12 when colored, the input / output characteristic data is corrected by performing a predetermined calculation;
program.

A computer-readable information storage medium for controlling display means and visual environment grasping means ,
The program according to claim 10 is stored .
Information storage medium.